Composite sealed bipolar plate for alkaline water electrolysis hydrogen production equipment

Abstract

The composite sealing bipolar plate comprises a metal plate, a composite frame and a sealing coating sleeve, the composite frame is of an annular structure, and the outer edge of the metal plate and the inner wall of the composite frame are fixedly connected into a whole in a matched mode. The sealing coating sleeve is fixedly connected to the outer edge of the composite frame and wraps the outer edge of the composite frame and the panels on the two sides in the sealing coating sleeve, and the binding posts on the outer circumferential wall of the metal plate penetrate out of the composite frame and the sealing coating sleeve. By optimizing the bipolar plate structure and adopting the composite sealing bipolar plate integrally formed by the metal plate, the composite frame and the sealing coating sleeve, the problems of high assembly difficulty and time and labor consumption of an assembly type bipolar plate are solved, the composite sealing bipolar plate is of an integral structure when the electrolysis equipment is maintained, the assembly efficiency is high, a gasket does not need to be replaced, and the maintenance cost is reduced. The maintenance cost is low, the maintenance efficiency is high, manufacturer customization is not needed, and sufficient accessory resources can be guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydrogen production equipment, and particularly relates to a composite sealing bipolar plate for an alkaline electrolyzed water hydrogen production device. Background Art

[0002] With the rapid growth of the global demand for clean energy, water electrolysis, as an efficient and environmentally friendly energy conversion technology, has received extensive attention. Among them, as a key component, the traditional structure of the bipolar plate is an assembled structure, including a metal plate and gaskets on both sides thereof. When assembling on an electrolysis device, multiple sets of metal plates, gaskets on both sides thereof, and other components distributed layer by layer need to be tightened and connected into one body by bolts. The following defects exist: 1. When assembling the assembled bipolar plates distributed layer by layer, hot steam needs to be introduced at the bottom of the structure distributed in the whole layer to soften the gaskets made of polytetrafluoroethylene material before they can be tightened and fixed by bolts, so as to ensure the sealing performance of each layer of components. However, the assembly process is complex, the assembly cycle is long, and it is time-consuming and laborious; 2. When the electrolysis device is repaired, the assembled bipolar plates need to be disassembled layer by layer. Since indentations are pressed on the surface of the gaskets during assembly, in order to ensure the sealing performance after assembly, the gaskets need to be replaced. Otherwise, there is a risk of leakage, which increases the maintenance cost of the electrolysis device, and the low assembly efficiency leads to a long maintenance cycle; 3. It is difficult to obtain resources. The assembled bipolar plates need to be customized and processed by manufacturers, which seriously affects the production progress. Therefore, in view of the above problems, it is necessary to make improvements. Summary of the Utility Model

[0003] The technical problem solved by the utility model: Provide a composite sealing bipolar plate for an alkaline electrolyzed water hydrogen production device. By optimizing the structure of the bipolar plate and adopting a composite sealing bipolar plate formed by integrally molding a metal plate, a composite frame, and a sealing coating sleeve, the problems of difficult assembly and time-consuming and laborious of the assembled bipolar plate are solved. When the electrolysis device is repaired, the composite sealing bipolar plate is an integral structure, with high assembly efficiency, no need to replace gaskets, low maintenance cost, high maintenance efficiency, no need to contact the manufacturer for customization, and sufficient spare parts resources can be ensured.

[0004] The technical solution adopted by the utility model: A composite sealing bipolar plate for an alkaline electrolyzed water hydrogen production device, including a metal plate, a composite frame, and a sealing coating sleeve. The composite frame is in a ring structure, and the outer edge of the metal plate is fixedly connected to the inner wall of the composite frame as a whole. The sealing coating sleeve is fixedly connected to the outer edge of the composite frame and wraps the outer edge of the composite frame and part of the panels on both sides inside it. The terminal posts on the outer circumferential wall of the metal plate pass through the composite frame and the sealing coating sleeve.

[0005] Wherein, the groove on the inner ring surface of the composite frame is fixedly connected to the outer edge of the metal plate as a whole, and the terminal posts on the outer circumferential wall of the metal plate pass through the composite frame.

[0006] Further, the composite frame is integrally formed by hot pressing a basalt fiber composite material and the outer edge of a metal plate through a mold.

[0007] Further, the cross-sectional shape of the sealing jacket is a U-shaped structure. The outer edge of the composite frame and two side partial panels are fixedly connected and adapted to the groove of the sealing jacket, and the terminal posts on the outer circumferential wall of the metal plate passing through the composite frame penetrate through the sealing jacket.

[0008] Further, the sealing jacket is a rubber sleeve, and the sealing jacket, the outer edge of the composite frame and two side partial panels are integrally formed by vulcanization through a mold.

[0009] Further, a plurality of kidney-shaped connection holes are formed on the surface of the composite frame board, and the plurality of kidney-shaped connection holes are distributed on both sides of the metal plate.

[0010] Advantages of the present utility model compared with the prior art:

[0011] 1. By optimizing the bipolar plate structure, the present technical solution adopts a composite sealing bipolar plate integrally formed by a metal plate, a composite frame and a sealing jacket, solves the problems of large assembly difficulty, time-consuming and laborious in the assembled bipolar plate. When the electrolysis equipment is repaired, the composite sealing bipolar plate is an integral structure, with high assembly efficiency, no need to replace gaskets, low maintenance cost and high maintenance efficiency;

[0012] 2. The present technical solution adopts a structure in which the composite frame made of basalt fiber composite material and the outer edge of the metal plate are integrally formed by hot pressing through a mold, and the outer edge of the composite frame and two side partial panels and the sealing jacket are integrally formed by vulcanization through a mold, so that the sealing jacket playing a sealing role is an integral structure with the metal plate through the composite frame, greatly reducing the replacement and installation difficulty of the bipolar plate, and having high sealing performance, without leakage, penetration, hydrogen embrittlement and other phenomena during use;

[0013] 3. The present technical solution has a simple structure and novel design, replaces the imported key soft sealing gasket, realizes independent localization, does not need to contact the manufacturer for customization during replacement and repair, can ensure sufficient accessory resources, solves the pain point problem of zero leakage in the industry, reduces the product weight by about 45%, and reduces the cost by about 12%. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0015] Figure 2 is a front view of the structure of the present utility model;

[0016] Figure 3 is Figure 3 the A-A cross-sectional view in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following will be combined with the Figures 1-3 in the embodiments of the present utility model to clearly and completely describe the technical solutions in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present utility model.

[0018] It should be noted that in this article, without contrary description, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0019] In this article, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation. The element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0020] A composite sealed bipolar plate for an alkaline electrolyzed water hydrogen production device, as Figures 1-3 shown, includes a metal plate 1, a composite frame 2 and a sealing jacket 3. The composite frame 2 has an annular structure, and the outer edge of the metal plate 1 is fixedly connected to the inner wall of the composite frame 2 as a whole. The sealing jacket 3 is fixedly connected to the outer edge position of the composite frame 2 and wraps the outer edge of the composite frame 2 and part of the panels on both sides inside it. The terminal post 5 on the outer circumferential wall of the metal plate 1 passes through the composite frame 2 and the sealing jacket 3; in the above structure, by optimizing the bipolar plate structure and adopting a composite sealed bipolar plate integrally formed by the metal plate 1, the composite frame 2 and the sealing jacket 3, the problems of large assembly difficulty, time-consuming and laborious existing in the assembled bipolar plate are solved. When the electrolysis device is repaired, the composite sealed bipolar plate is an integral structure, with high assembly efficiency, no need to replace gaskets, low maintenance cost and high maintenance efficiency;

[0021] Among them, the groove on the inner toroidal surface of the composite frame 2 is fixedly connected to the outer edge of the metal plate 1 in a matching manner to form an integral body, and the terminal posts 5 on the outer circumferential wall of the metal plate 1 penetrate through the composite frame 2 and are arranged outside; specifically, the composite frame 2 is integrally formed by hot pressing the basalt fiber composite material and the outer edge of the metal plate 1 through a mold; in the above structure, the composite frame 2 made of basalt fiber composite material and the outer edge of the metal plate 1 are integrally formed by hot pressing through a mold, and the structure in which the outer edge and two side partial panels of the composite frame 2 are integrally formed with the sealing jacket 3 through mold vulcanization makes the sealing jacket 3 playing a sealing role be an integral structure with the composite frame 2 and the metal plate 1, greatly reducing the difficulty of replacement and installation of the bipolar plate, and having high sealing performance, without leakage, penetration, hydrogen embrittlement and other phenomena during use; among them, the metal plate 1 is made of Q235 steel plate with nickel plating on the surface.

[0022] The fixed connection structure between the sealing jacket 3 and the composite frame 2 is as follows: the cross-sectional shape of the sealing jacket 3 is a U-shaped structure, the outer edge and two side partial panels of the composite frame 2 are fixedly connected to the groove of the sealing jacket 3 in a matching manner, and the terminal posts 5 on the outer circumferential wall of the metal plate 1 passing through the composite frame 2 penetrate through the sealing jacket 3; specifically, the sealing jacket 3 is a rubber sleeve, and the sealing jacket 3 and the outer edge and two side partial panels of the composite frame 2 are integrally formed by mold vulcanization.

[0023] Among them, a plurality of kidney-shaped connection holes 4 are formed on the surface of the composite frame 2, and the plurality of kidney-shaped connection holes 4 are distributed on both sides of the metal plate 1, as Figure 1 shown. Three kidney-shaped connection holes 4 for connecting with the parts on both sides are arranged on the composite frame 2. With the cooperation of these kidney-shaped connection holes 4 and the terminal posts 5 on the outer circumferential wall of the metal plate 1, the installation orientation of the composite bipolar plate can be quickly determined, ensuring the consistency of the installation position during secondary installation.

[0024] The technical solution of the present invention has a simple structure and novel design, replaces the imported key soft gasket, realizes independent localization, does not need to contact the manufacturer for customization during replacement and maintenance, can ensure sufficient accessory resources, solves the pain point problem of zero leakage in the industry, reduces the product weight by about 45%, and reduces the cost by about 12%.

[0025] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0026] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. Composite sealed bipolar plate for alkaline water electrolysis hydrogen production equipment, characterized by: The invention comprises a metal plate (1), a composite frame (2) and a sealing covering sleeve (3); the composite frame (2) is annular in structure, and the outer edge of the metal plate (1) is adapted and fixedly connected to the inner wall of the composite frame (2) as a whole; the sealing covering sleeve (3) is fixedly connected to the outer edge of the composite frame (2) and wraps the outer edge of the composite frame (2) and part of the panels on both sides thereof; the terminal (5) on the outer circumferential wall of the metal plate (1) passes through the composite frame (2) and the sealing covering sleeve (3).

2. The composite sealed bipolar plate for alkaline water electrolysis hydrogen production equipment according to claim 1, characterized in that: The groove on the inner annular surface of the composite frame (2) is adapted and fixedly connected to the outer edge of the metal plate (1) as a whole, and the terminal posts (5) on the outer circumferential wall of the metal plate (1) are arranged to pass through the composite frame (2).

3. The composite sealed bipolar plate for alkaline water electrolysis hydrogen production equipment according to claim 2, characterized in that: The composite frame (2) is formed integrally by hot pressing a basalt fiber composite material with the outer edge of the metal plate (1) through a mold.

4. The composite sealed bipolar plate for alkaline water electrolysis hydrogen production equipment according to claim 1, characterized in that: The cross-sectional shape of the sealing sheath (3) is a U-shaped structure, the outer edge of the composite frame (2) and the panels on both sides are adapted to be fixedly connected in the groove of the sealing sheath (3), and pass through the terminal posts (5) on the outer circumferential wall of the metal plate (1) provided on the composite frame (2) to pass out of the sealing sheath (3).

5. The composite sealed bipolar plate for alkaline water electrolysis hydrogen production equipment according to claim 4, characterized in that: The sealing covering sleeve (3) is a rubber sleeve, and the sealing covering sleeve (3) and the outer edge of the composite frame (2) and the panels on both sides are integrally formed by vulcanization of a mold.

6. The composite sealed bipolar plate for alkaline water electrolysis hydrogen production equipment according to any one of claims 1 to 5, characterized in that: A plurality of waist-shaped connection holes (4) are formed on the plate surface of the composite frame (2), and the plurality of waist-shaped connection holes (4) are distributed on both sides of the metal plate (1).

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